Low-voltage electric switch.



Nl. GUETT.

LOW VOLTAGE ELECTRIC SWITCH. AnPLlcArloN r|LEnJuNE22.1s17.

Patented J an. 22,1918.

631ml i NONnOE GUETT, or HARTFORD, CONNECTICUT, assreNon To Tun RTaimer:

wi t t CONNECTICUT.

LOW-VOILTGE ELECTRIC SCH.

l FCTURING COMPANY, vOIF HARTFORD, CONNECTICUT, A CORFOTIION- OF ToI all'whom zt may concern:

.. Be it known that I, MONROE Gun'rr, a

citizen of the United States, residing at Hartford, in the countyof`Hartford and -State of Connecticut, havevinvented a new and -usefulImprovement in Low-Voltage Electricv Switches, of which the following isa specification.

Specication of Letters Patent. Patented Jaim., 22, llgll.

application nea rune 22, 1917.' serial No. 175,296. v

l the bottom of the receptacle. The fingers This invention `relates toan electric` switch of the ltype which is particularly designed foropening and closing .battery circuits, such, for instance, as those usedon automobiles and other vehicles in the lighting, ignition and startingsystems.

^ The object of the invention is to provide a very cheap, sinall anddurable switch that can be readily installed and' easily manipulated foretliciently Opening and closing a low tension circuit.

As manufactured .and placed on the inarket switches of this characterare quite small and' all of the views of the accompanying drawing are onan enlarged scale. Figure 1 shpws a face view of 'the switch. Fig. 2shows la side view. Fig. `3 shows a longitudinal section on planey 3 3on Fig. 1.

Fig. 4 shows a transverse section on line 4-.4 on Fig. 3. Fig. 5 is aview 'looking into the receptacle, the face plate, operating button andblade being removed. Fig. 6 is a view looking at the bottom of thereceptacle with the terminal plates in place. Fig. 7 is a. view lookingat the bottom of the rel .ceptacle with the-terminal plates andinsulation removed.' Fig. 8 is a view of one of the insulating disksemployed on the inside and outside ot the bottom of the receptacle- Fig.9 is a view ot one of the .insulating washers which are placed in theopenings in the bottom of the receptacle and between the insulatingdisks.

'llhe receptacle 1 oit the switch shown is a cup ofthin sheet metal withears 2 extending outwardly from its open end. ln the bottom of thereceptacle are two elongated pertorations '3: Washers t ot insulatingmaterial are located in the circular portions of the perforations ih the:bottom ot the receptacle, and inside and outside ot the bottoni areplaced disks 5 ot insulating material. lEach of these disks has twocircular openings 6 and tour angular openings 't'.

near their free ends have bosses 10 struck out so- `as to face eachother. centralopenings that aline with the circular openings in thedisks and notches 11 in their edges that aline with the angular'openings in the disks. l

The terminal plates 12 are seated on the insulatingdisk on the outsideof the bottom of the receptale. These plates have circular openings thataline with the circular openings in the disks and they have lugs 13 thatextend through the angular-openings in the disks and into the notches inthe edges of the finger feet. These parts thus assembled are' secured inplace and the terminal plates and lingers are electrically connected byeyelets 4 that are passed through the circular openings in the termi nalplates, disks, Washers and feet. and are headed over at both ends. .'lheeyelets are interiorly threaded for the reception of the binding screwsthat are employed for the attachment of `the ends of the circuit wires.In this simple and cheap manner the spring lingers are connected in thecircuit and are insulated from the receptacle and from each other.

The feet 'have f The /ace plate 15 is stamped to the del siredoutlinefrom thin sheet metal and is fastened over the open end ot therece tacle by screws 16 which turn through t e plate into the ears thatproject from the' open end of the receptacle. 'llhe switch blade 17 iscut trom a thin sheet ot insulatover at both ends to hold it in'plaoe.All

ot the parts ot this simple switch are easy to manufacture and assemble'and the whole structure is very cheap and Compact.

When the button is pushed in the spring ngers are separated by the thininsulating lblade, and under these conditions the circuit is opened.While the blade is in this osition the bosses in the ends ot the springgers enter the perforation 20 and retain e blade a ,a

lltltl ret l. .r accidental movement.

gage the eyelet 21 and thus become electrically yconnected so that thecircuit will beclosed. The entry of the bosses on the fingers into theeyelet opening retains the blade in this position.

The invention claimed is;

1. An electric switch having a cup-shaped receptacle, a face plateclosing the upper end of the receptacle, a piece of thin sheetinsulating material extending diametrically across and movable vinwardand outward within the receptacle5 said insulating piece having twoperforations through itjtlatwise within the receptacle and having a stemthat extends through the face plate, a.metal lic eyelet fixed in one ofsaid perforations and extending from wide face to wide face of saidinsulatin piece, and a pair of conducting spring ngers having theirinner -ends secured to the bottom of the receptacle and their outer endspressing against the wide faces of said insulating piece, said ngersbeing provided with bosses struck out toward each other from near theirouter ends which bosses are adapted to fit into the opening through theeyelet when the insulating piece is drawn outward and enter theperforations through it iatwise within the' receptacle and having anintegral stem that extends throughy the slot in the face plate, ametallic eyelet fixed in one of said perforations and .extending fromwide face to wide face of said insulating piece, and a pair of Yconducting spring fingers having their inner ends secured to butinsulated from the bottom of the receptacle and their outer endspressing against the wide face of lsaid insulating piece,' said ngersbeing provided with bosses struck out toward each other `from near theirouter ends which bosses are adapted to lit into the opening througn theeyelet when the insulating piece is drawn outward and enter theunoccupied perforation when the insulating piece is moved inward. v

' MONROE GUETT.

